Epidural needle insertion method

The angle between the direction in which the catheter is placed into the epidural space and the direction of the needle should be ?90° so that the catheter is placed relatively normally. The doctor can place the curved tip of the catheter against the bevel of the needle in order to control the direction of insertion so that it is placed in the center of the epidural space. The appropriate length of the catheter inserted into the epidural space is 3-5 cm. If the catheter is too short, it is easy to be taken out when the needle is withdrawn. If it is too long, it is easy to kink, spiral, and deviate to one side, or even pass through the intervertebral foramen and enter the paravertebral [1]. 2].

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